Between my 2 sons, I've been to plenty of events and I found all events beneficial and useful. This ranges from Perfect Game to Baseball Factory to Showball. However, I never took my boys to the "Big 3". From my understanding, that is 3 schools joining forces to hold their own camp. If you want advice on Showball, I can offer that. As my previous posts mentioned, they were the greatest experiences my boys had while showcasing. The bottom line is that they put you in front of 15 schools and give you an opportunity to play on a major league baseball field. While there may be 2 or 3 volunteers present, I've learned that even the volunteer assistants are extremely influential in the recruiting process. Nonetheless, I can proudly say that my oldest son received a scholarship to Nevada after one of the Showball events. Before that event at At&t Park, my son had never even heard from them or received any interest whatsoever. Even though I'm a little bias because of my son's sucess, I would recommend Showball. Then again, everyone has to make their own decisions.
One last thing I learned during the recruiting process. Your chances of playing college baseball increase when more schools watch him play.